Apparently, the year plus relationship of Calvin and Taylor Swift ended because the DJ was “intimidated” by her success. Now, I don’t know if this is true, because I don’t know Calvin Harris to be super public or do many interviews, so I can’t really get a sense of his personality or how he felt about the relationship. I can say that if anyone’s success is intimidating, it’s Taylor’s. People reports:

“[Harris] said on multiple occasions that he was intimidated by Taylor, which is why he would not attend any events where she was being honored, or any award shows unless he was nominated,” explains Swift’s friend.

But Swift is holding her head high, adds the pal. “Taylor is an independent young woman, and she realizes it will take a very secure man to handle her success,” says her friend.

A source close to the DJ – whom sources confirm ultimately pulled the plug on the relationship – tells PEOPLE that the split “wasn’t a shock” for Swift because the couple had ongoing issues. “They come from very different worlds,” the source explains. “Taylor is used to being treated a certain way.”

The Harris insider added that he didn’t feel like the relationship was “leading anywhere. It wasn’t an equal relationship. Their age difference might not be significant for many couples, but for them it was part of the problem too. Taylor somewhat lacks real-life experience. They will not be getting back together.”

Regardless, the insider says that Harris still has high praise for his ex, noting that the Scottish star “very much admires her as a person and what she has been able to do with her career. This is what drew him to her in the first place.”

“She works incredibly hard for things that she believes in,” the Harris source says. “He always saw that as an amazing quality. They are still friendly.”

This paints Calvin out to be a super insecure dude, don’t you think? And makes Taylor out to be kind of a naive priss. Which, maybe she is?